The same protection available for gasoline engines is also available for diesel applications. Today's stop-and-go driving and higher freeway speeds make it more important than ever to use the one time Microlon automotive engine treatment. The friction reducing Microlon film saves you money by reducing fuel consumption, decreasing maintenance costs and extending the life of your engine. You also help our environment with reduced noxious emissions. Plus, you'll notice smoother operation and improved performance with increased horsepower and torque. Each kit contains: treatment for Crankcase application - treatment for Fuel System application